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Updated code presenting fragment syntax sophistication.

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This commit is contained in:
David Russell 2017-09-06 09:14:13 +07:00
parent 937eaf7162
commit 5a049c48b8
1 changed files with 32 additions and 10 deletions
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42
public/libs/highlight.js/9.12.0/reveal-code-focus-1.0.0-mod.js
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@ -200,20 +200,42 @@
var topLineNumber, bottomLineNumber;
forEach(lines.split(','), function(line) {
lines = line.split('-');
if (lines.length == 1) {
focusLine(lines[0]);
} else {
var i = lines[0] - 1, j = lines[1];
while (++i <= j) {
focusLine(i);
}
}
var parsed = parseDataCodeFocus(line);
forEach(parsed, function(line) {
focusLine(line);
});
});
updateCodeOpacity();
function parseDataCodeFocus(dataCodeFocus) {
//
// Parse data-code-focus attribute data:
//
// Examples:
// [1], [1, 2], [1-2], [1-3, 5], [6, 9-11]
//
var parsed = new Array();
try {
var dcfParts = dataCodeFocus.split(",");
forEach(dcfParts, function(dcfPart) {
var frag = dcfPart.split('-');
if(frag.length == 1) {
parsed.push(frag);
} else {
var i = frag[0] - 1, j = frag[1];
while (++i <= j) {
parsed.push(i);
}
}
});
} catch(ex) {
// Ignore bad data-code-focus syntax
}
return parsed;
}
function focusLine(lineNumber) {
// Convert from 1-based index to 0-based index.
lineNumber -= 1;